Home / 1,224,003.87-1,689,102.93-680,129.76

Finding the Fourth Proportional to 1,224,003.87, 1,689,102.93 and 680,129.76

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Solution

The fourth proportional to 1,224,003.87, 1,689,102.93 and 680,129.76 is: 938,566.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,224,003.87 : 1,689,102.93 = 680,129.76 : x
  2. Step 2: Convert to fraction form
    1,224,003.87/1,689,102.93 = 680,129.76/x
  3. Step 3: Cross multiply
    1,224,003.87x = 1,689,102.93 × 680,129.76
  4. Step 4: Simplify right side
    1,224,003.87x = 1,148,809,170,396.20
  5. Step 5: Solve for x
    x = 1,148,809,170,396.20/1,224,003.87
  6. Step 6: Final answer
    x = 938,566.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.